RFID portal array antenna system
US7528726B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2007 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | May 24, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/068
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
This invention provides an array antenna for a radio frequency identification (RFID) system, the array antenna comprises a transmission line with a longitudinal span proximately equaling to a height of a space desired to be covered by the array antenna, the transmission line having a terminal coupled to a RFID reader, and a plurality of radiating elements disposed on the first transmission line along the longitudinal span, additionally, reflective materials used behind the array antenna to maximize the illumination in the desired space and absorptive materials installed surrounding the desired space, in order to minimize the illumination of the undesired space surrounding the desired space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.